So … what's the catch? Well, the face scrub in question is a walnut face scrub, and if the pairing of the words “walnut” and “face” has you hearing alarm bells, you’re not alone.

In 2016, St. Ives faced a class action lawsuit over their cult-favorite apricot scrub when it was alleged that the walnut powder in the product caused microscopic tears in the skin. The suit was eventually thrown out, but the concerns about walnut-based skincare products have lingered.

According to Kylie, her walnut face scrub is her “secret to a fresh face” (though, tbh, being 21 may also have something to do with that), and it’s so “gentle” you could use it every day.

Twitter took the billionaire to task, questioning (and straight up slamming) her decision to include walnut in her exfoliator, as well as the claim that it can be used daily. And honestly, regardless of whether walnut products are actually harmful to your skin, some of these images and vivid descriptions are enough to put me off any nut-based scrubs, or maybe even any scrubs …

For the record, skin therapist Ildi Pekar tells InStyle that you generally shouldn't exfoliate more than twice a week, though there's a smidge of wiggle room (as in, one extra scrub session) depending on the season and the amount of makeup you wear. (Additionally, Pekar says that exfoliating serums — like enzyme or alpha hydroxy acid-based formulas — are a gentler option that can be used daily.)